18dpo no AF

Hi, I'm currently 18dpo, tested at 15dpo and BFN so I haven't tested again since then as last month I was 3 days late usually have regular 28 day cycles. this month I am later than last month and been super gassy lots of thick CM which has just happened today and very emotional and tired in the last few days. Also I'm waking up early hours of the morning usually I sleep right through and AF type pains in the morning but they are gone by the afternoon. What are the chances I am pregnant given my symptoms so scared of testing as don't want to see BFN again, will have to test in the next few days but wanted your opinions. TIA