Trying to conceive. Pls suggest!

Hi as my periods are late by 7days (LMP 23rd March). my cycle length have been around 30-34 days . I had sex during fertile window . I got my beta hcg done today which came 0.1 miu/ML. And since last 2 days I am also getting light color pinkish spotting which remained for some time and went back to normal . No bleeding started. I had pink spotting on 29th April around 4 pm which I found out while wiping . Post evening no bleeding started neither any spotting happened later in evening . Today again in afternoon I had pink spotting which I found while wiping . This time i did not get any cramp which I generally get before my period starts . I only get light pressure on in lower abdomen sometimes and feel like waist is stretching. I am really worried . Pls suggest