plan b/mental illness drugs

 my boyfriend and I are young adults. I'm 18 and he's 20. He's stable with his job etc. we decided like dip shits that he should cum inside me once  and we will get plan b. He did it we bought it and he didn't pull out. I'm very sick I have bipolar 2 major depression and high anxiety. I take colonazepam 1 Mg 3-4 times a day. I have very bad anxiety. I take lamotrigine 150mg once a day. I take paroxetine 10mg 1-3 tablets daily. I take bupropion 500mg everyday. Should I even take the plan b because that will fuck with my other meds and if I do take it would it even work? I'm on so many drugs already