Spotting 😥

Right ladies, bit of a long winded one. At 5 weeks 4 days I had some minor pink bleeding. Went for an early scan at 5 weeks 6 days and saw our baby with a definite good strong heartbeat so thought that everything was great. I am now 7 weeks 3 days and been having brown spotting pretty much since our first scan. Rang the EPU at 6 weeks 6 days and she said it was probably old blood from earlier bleed and not to worry too much but tp ring if it got any heavier. Today is it a bit heavier and had slight 'pulling' pains in my lower abdomen. Going to ring again tomorrow and if I'm not offered another scan we are going to pay for one privately. Do any of you lovely ladies have any words of wisdom or reassurance?