What do you think

Hey guys so I suppose to take metformin on Monday and didn't because I started having some cramps so I say my period feels like it wants to come down so I went to the bathroom and it look like I saw blood so I put on a pad but when I got home there was no blood on the pad. My last period was Feb 22 2019 and I really looking forward to seeing it because am trying to get pregnant and i have no clue when am ovulating I saw some egg white but when I check again it was dry so I don't know what to do now this morning I wipe again and It looks like blood but it's dark should I take the metformin so it can come because I really want my period to come down but afraid after 2 months of not having one am going to have alot of clots and heavy bleeding