In my experience, relationships can very hard and draining when your when your psyche is in need of nourishment (weak). Whether that nourishment comes from meds, spirituality, or just "me" time. That might sound a little selfish, but its more important to take take of YOU, before anyone else.
As hard as it may be, may I suggest some downtime for yourself to collect your thoughts and feelings about your partner. No relationship will work if you are not feeling up to it.
With me, when I can't get myself together, I just don't have the capacity to help someone else.
Best of Luck!