LS, until you confirm that you are not pregnant, talking about missing him or depression or anything else is sort of tertiary at best. You have the underlying anxiety due to the uncertainty of the situation and it might color your world in all kinds of unexpected ways.

You are probably simply anxious. Not even depressed, but anxious. And anxiety makes you cling to him or miss him etc.

Once you know that you are not pregnant, once you have a very effective birth control on hand, once you sleep enough, eat enough, drink enough fluids, spend time outdoors, move your body and interact with your friends on a regular basis, THEN you would reassess the situation.

On an airplane, they give you safety instructions and tell you to put an oxygen mask first before helping others put their masks on. In this example, removing the anxiety over possible pregnancy is like putting that oxygen mask on, while dealing with feelings, attachments, and the like can only be done once your oxygen mask is secure and you are breathing without difficulties.

I wish you luck and hope that good things come your way soon!