Is this alrite?

hi been on a diet for nearly 2months now an done really well ive lost 16pound making me 7stone 11 im 5ft2 by the way.alls ive been eating is special k for brecky with skimmed milk soup fordinner and chicken filets with veg for tea and it worked thing is im fed up eating the same stuff so today i bought weightwatchers meals will i stil lose another couple of pounds today ive had specialk cereal bar for brekfast weightwatchers meal for dinner and just had 1 for my tea im i ok in doing this do not wana gain any weight.goin jogging tommorow aswell.