my age is 30 yrs. I have have a child of 2yrs 9 m. now jam trying for 2nd pregnancy. due to blighted ovum I got abortion on december 2020.but but from that onwards my periods gone irregular .I got period on jan 5th with spotting only.next on jan 30 with regular bleeding .next feb 23 with spotting of 5 days and bleeding for 3 days only. now I think am pregnant but I saw spotting. i think i got my period but still when iam going to motion only I am bleeding. I got negative in pregnancy test. is there any chance of pregnancy.pls guide me