Every month missing period for 5 to 10 days. While before to period there will be heavy stomach pain. Left side also too heavy pain. While as a couple meeting after that, onwards heavy pain. It will continue for one or two days. We are married couple of 1 year but there is no convince. We are trying seriously but not. Delay in periods every month & before the span of releasing of PM's. The stomach is very tight & heavy pain. Please suggest.