depression is a common side effect of taking an oral contraceptive. it would be worth mentioning that you have had this reaction before and keeping a diary of your moods and having regular follow-up with the person who is prescribing it for you. sometimes medications affect us differently at different times (allergies can develop to what one was not allergic before and vice versa). I would say that in this instance you would be wise to remember the past experience to the extent that it helps motivate you to really monitor your mood in response to the medication.

sometimes people find that just knowing that their mental state has been affected by something in particular (e.g., a particular medication, getting ones period) helps the bad feelings be more manageable. so it might be that even if you do respond to the medication with depression you won't feel suicidal because you will know the depression will lift if you cease taking the drug.

i find it hard sometimes to know how much my past experiences should be remembered in useful ways (to help me better monitor and manage the present) and how much my past experiences need to be placed squarely in the past and where i would be better to alter my present behaviour that arises in response. i think that part of it is about assessing the risk. if you had a panic attack if you didn't have your water bottle with you then it would be worth dealing with that. taking a water bottle with you is actually a pretty adaptive response, however, because people should really drink more water and sip at it fairly constantly. so... the good and the bad of past experiences.

similarly with the pill... might be hard to take it but wise not to forget the past so you can monitor the situation.