I would wager so, hence my suggestion for a therapist.

It's not imperative, I don't think, you *have* to like sex. Really, I don't think that's necessary, and not my aim in advising that. I don't think though it should be something so alien as to be hated. While not, I think, strictly necessary you enjoy it (which I don't think is overly important), it shouldn't invoke a conscious contempt.
As far as the brand goes...my advice? lol I'll confess out of concern I'm still not crazy about the idea, but to keep things safe, my advice would be to
thoroughly treat the area with rubbing alcohol before anything (of course for the love of all that's holy,
don't do it while the alcohol is wet). If at all possible, try to treat the area with a cold, wet compress after the fact...I don't know exactly how feasible that is in the context of play, but it should be done. You'll want to cover the area with a sterile bandage that should be changed regularly, making sure the material isn't something that is prone to lint, such as cotton. Based on what I've read, neosporin is good for burns...I've heard greasy ointments are bad for burns, but the internet is telling me contrary...it has been quite some time since I went through first aid training in JROTC, I'm afraid.
Post...um...lol event, keep an eye out for signs of infection: any seeping (particularly pus, in which case please seek medical aid), redness around the area (I suspect redness due to secondary heat from the material, but anything that looks like red tendrils coming from the area is a major red flag), and fever are all major signs. Just to be safe.

I tend to lean towards paranoia in things like this, and I'll confess my knowledge of branding in a sexual context is practically nil, but...do be safe?
Hugs and all of my best,
Harley