Early Mc still haven't had a period in 10 weeks

I have had irregular cycles from Oct to january, 46-48 day cycles.in Jan 25th I found out I was pregnant, but had already had a mc. Only 4 weeks along. That was Jan 14th to the 18th. It is now been 10 weeks since my period, I have taken several pregnancy test all neg, ttc. Had some symptoms come and go but apparently they didn't amount to anything. Any thoughts? and no I haven't been to the doc yet, but now seriously considering it