I feel discomfort and sakit bahagian rahim, still period. Pregnant or not?

i did on february and notice that i period hujung bulan feb and period again awal bulan april.. i buat upt 3 times and the last one mcm double line but kabur sgt, i kena pkai flash baru nmpk but still too blurry.but i slalu rsa sakit kt bhgian rahim n pinggang. but period i still dtang mcm biasa for 5 days. cuma period yg latest ni idtg lewat 4 hari. ni tanda i hamil or not?